Surface Oxygen Injection in Tin Disulfide Nanosheets for Efficient CO_(2) Electroreduction to Formate and Syngas

作     者：Tao Chen Tong Liu Tao Ding Beibei Pang Lan Wang Xiaokang Liu Xinyi Shen Sicong Wang Dan Wu Dong Liu Linlin Cao Qiquan Luo Wei Zhang Wenkun Zhu Tao Yao Tao Chen;Tong Liu;Tao Ding;Beibei Pang;Lan Wang;Xiaokang Liu;Xinyi Shen;Sicong Wang;Dan Wu;Dong Liu;Linlin Cao;Qiquan Luo;Wei Zhang;Wenkun Zhu;Tao Yao

作者机构：National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230029People’s Republic of China State Key Laboratory of Environmentally Friendly Energy MaterialsSchool of National Defense Science and TechnologySouthwest University of Science and TechnologyMianyang 621010People’s Republic of China Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601People’s Republic of China School of MaterialsSun Yat-Sen UniversityGuangzhou 510275People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2021年第13卷第11期

页      面：441-451页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：This work was supported by National Natural Science Foundation of China(Grants No.12025505) China Ministry of Science and Technology(2017YFA0208300) Youth Innovation Promotion Association CAS(CX2310007007 and CX2310000091) Open Fund Project of State Key Laboratory of Environmentally Friendly Energy Materials(20kfhg08) We would thank NSRL and SSRF for the synchrotron beam time.The calculations were performed on the supercomputing system in the Supercomputing Center of University of Science and Technology of China 

主　　题：Oxygen injection Tin disulfide CO_(2)electroreduction Formate Syngas 

摘      要：Surface chemistry modification represents a promising strategy to tailor the adsorption and activation of reaction intermediates for enhancing ***,we designed a surface oxygen-injection strategy to tune the electronic structure of SnS_(2) nanosheets,which showed effectively enhanced electrocatalytic activity and selectivity of CO_(2) reduction to formate and syngas(CO and H_(2)).The oxygen-injection SnS_(2) nanosheets exhibit a remarkable Faradaic efficiency of 91.6%for carbonaceous products with a current density of 24.1 mA cm^(−2) at−0.9 V vs RHE,including 83.2%for formate production and 16.5%for syngas with the CO/H_(2) ratio of 1:*** operando X-ray absorption spectroscopy,we unravel the in situ surface oxygen doping into the matrix during reaction,thereby optimizing the Sn local electronic *** synchrotron radiation infrared spectroscopy along with theoretical calculations further reveals that the surface oxygen doping facilitated the CO_(2) activation and enhanced the affinity for HCOO**** result demonstrates the potential strategy of surface oxygen injection for the rational design of advanced catalysts for CO_(2) electroreduction.